button/Button.js: imported from pve-manager

Makefile

@@ -24,6 +24,7 @@ JSSRC=					\
 	form/TextField.js		\
 	form/Checkbox.js		\
 	form/KVComboBox.js		\
+	button/Button.js		\
 	grid/ObjectGrid.js		\
 	grid/PendingObjectGrid.js	\
 	panel/InputPanel.js		\

button/Button.js

@@ -0,0 +1,76 @@
+/* Button features:
+ * - observe selection changes to enable/disable the button using enableFn()
+ * - pop up confirmation dialog using confirmMsg()
+ */
+Ext.define('Proxmox.button.Button', {
+    extend: 'Ext.button.Button',
+    alias: 'widget.proxmoxButton',
+
+    // the selection model to observe
+    selModel: undefined,
+
+    // if 'false' handler will not be called (button disabled)
+    enableFn: function(record) { },
+
+    // function(record) or text
+    confirmMsg: false,
+
+    // take special care in confirm box (select no as default).
+    dangerous: false,
+
+    initComponent: function() {
+	/*jslint confusion: true */
+
+        var me = this;
+
+	if (me.handler) {
+	    me.realHandler = me.handler;
+
+	    me.handler = function(button, event) {
+		var rec, msg;
+		if (me.selModel) {
+		    rec = me.selModel.getSelection()[0];
+		    if (!rec || (me.enableFn(rec) === false)) {
+			return;
+		    }
+		}
+
+		if (me.confirmMsg) {
+		    msg = me.confirmMsg;
+		    if (Ext.isFunction(me.confirmMsg)) {
+			msg = me.confirmMsg(rec);
+		    }
+		    Ext.MessageBox.defaultButton = me.dangerous ? 2 : 1;
+		    Ext.Msg.show({
+			title: gettext('Confirm'),
+			icon: me.dangerous ? Ext.Msg.WARNING : Ext.Msg.QUESTION,
+			msg: msg,
+			buttons: Ext.Msg.YESNO,
+			callback: function(btn) {
+			    if (btn !== 'yes') {
+				return;
+			    }
+			    me.realHandler(button, event, rec);
+			}
+		    });
+		} else {
+		    me.realHandler(button, event, rec);
+		}
+	    };
+	}
+
+	me.callParent();
+
+	if (me.selModel) {
+
+	    me.mon(me.selModel, "selectionchange", function() {
+		var rec = me.selModel.getSelection()[0];
+		if (!rec || (me.enableFn(rec) === false)) {
+		    me.setDisabled(true);
+		} else  {
+		    me.setDisabled(false);
+		}
+	    });
+	}
+    }
+});